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Amazon CloudWatch Logs logging driver
The awslogs logging driver sends container logs to
Amazon CloudWatch Logs.
Log entries can be retrieved through the AWS Management
Console or the AWS SDKs
and Command Line Tools.
Usage
You can configure the default logging driver by passing the --log-driver
option to the Docker daemon:
docker daemon --log-driver=awslogs
You can set the logging driver for a specific container by using the
--log-driver option to docker run:
docker run --log-driver=awslogs ...
Amazon CloudWatch Logs options
You can use the --log-opt NAME=VALUE flag to specify Amazon CloudWatch Logs logging driver options.
awslogs-region
The awslogs logging driver sends your Docker logs to a specific region. Use
the awslogs-region log option or the AWS_REGION environment variable to set
the region. By default, if your Docker daemon is running on an EC2 instance
and no region is set, the driver uses the instance's region.
docker run --log-driver=awslogs --log-opt awslogs-region=us-east-1 ...
awslogs-group
You must specify a
log group
for the awslogs logging driver. You can specify the log group with the
awslogs-group log option:
docker run --log-driver=awslogs --log-opt awslogs-region=us-east-1 --log-opt awslogs-group=myLogGroup ...
awslogs-stream
To configure which
log stream
should be used, you can specify the awslogs-stream log option. If not
specified, the container ID is used as the log stream.
Note: Log streams within a given log group should only be used by one container at a time. Using the same log stream for multiple containers concurrently can cause reduced logging performance.
Credentials
You must provide AWS credentials to the Docker daemon to use the awslogs
logging driver. You can provide these credentials with the AWS_ACCESS_KEY_ID,
AWS_SECRET_ACCESS_KEY, and AWS_SESSION_TOKEN environment variables, the
default AWS shared credentials file (~/.aws/credentials of the root user), or
(if you are running the Docker daemon on an Amazon EC2 instance) the Amazon EC2
instance profile.
Credentials must have a policy applied that allows the logs:CreateLogStream
and logs:PutLogEvents actions, as shown in the following example.
{
"Version": "2012-10-17",
"Statement": [
{
"Action": [
"logs:CreateLogStream",
"logs:PutLogEvents"
],
"Effect": "Allow",
"Resource": "*"
}
]
}